Class notes
Gas exchange and circulation
- Course
- BIO 2040
- Institution
- William Paterson University
Gas exchange. Types of specialized respiratory structures. 2 Types bi-directional air flow. Circulation and gas exchange
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When vesselsdiastole-relaxation/dialation
willingend accept to decrease pressure constrict
press. ↑
· - more
,
-
auteries :
thick elastic walls : arteriole contract -> increases down when vessels
stream pressure dialate press. 7
: thin LG SA will slow blood movement
capillaries
-
narrow : :
,
:
contain to blood to heart
-veins
flow
8-waylowest
values return
(SA SA
good
blood increase
>
velocity capillaries
:
-
is in
-
Gas for ①
Exchange
ni
change
ex -
-
-
:
- -
inhalation down to --
expand longs
-
diaphragm pull
-
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-
·
E
-
⑰ -
press (more (t) Q
-
increases It . - -
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-
-
-
-
.
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exhalation-diapGragm poshes(
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to contract
long
·
I
-
·
-
-
-
up L
-
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increases (t) (more ( ) +
press
-
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-
L(
Types of specialized respiratory structures :
bidirectional countercurrent exchange
longs mammals alveoli
&
: air
>
-
no
, ,
sacs
,
drivendiffusion
birds + unidirectional countercurrent -anterior It
exchange
air sacs
, , ,
Czexhalation) (Parebronchi) Zinhalations
·
Trachea :bidirectionalCells idirect Contacte menwirsupply invertebris
2
demand is relative to
activity
Iwl
2 Bi-Directional Air-low
Types
(t)
press.
-
works
by queezing+
S
pushing air
P lace-to-place
-
air is
pushed to
long during
S inhalation (es
exhalation
.
Frogs)
Wngs during
>
muscles
squeeze
-
contract
· C-7
press . -
diaphragm driven
, diapragm , pushes up
-
ribs ush
up
p
diapham pulIs down
ribs
pull down -> draws in
Cair
pressure is
required for sealed cavity
-
air a
(lungs)
+ Gas
Circulation Exchange
red blood cells CREC)
Erythrocytes transport Oz
· -
kinds Oc
hemoglobin the
pre
+ in which
- :
>
-
contains iron :
red color
here contains iron
group
-
here binds to 02 due to it's 3-0 structure
group
-
-
plasma : has bicarbonate ions , specialized to bind CO2
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